Display instrument and method for production and disassembly of a display instrument

Abstract

A display instrument ( 1 ), in particular, for a motor vehicle, has a housing ( 2 ) retaining a cover disc ( 3 ) and a connector element ( 10 ), connecting the housing ( 2 ) and the cover disc ( 3 ) which engages in a housing recess ( 11 ), arranged on the housing ( 2 ). A secure connection of housing ( 2 ) and cover disc ( 3 ) for the display instrument ( 1 ) may be achieved, whereby the connector element ( 10 ) is arranged in the housing recess ( 11 ) and a disc recess ( 12 ), corresponding to the housing recess ( 11 ) on the cover disc ( 3 ), under tension. In the method for production of the display instrument ( 1 ), the connector element ( 10 ) is introduced under tension into the housing recess ( 11 ) and the disc recess ( 12 ) such as to connect the housing ( 2 ) and the cover disc ( 3 ) together. The method for disassembly of the display instrument ( 1 ) is based on pressing the connector element ( 10 ) out of the housing recess ( 11 ) and/or the disc recess ( 12 ).

1. A display instrument comprising a housing retaining a cover disk and a connector element connecting the housing and the cover disk, wherein:
 the connector element engages in a housing recess arranged in the housing, 
 the connector element is arranged in the housing recess and a disk recess of the cover disk corresponding to the housing recess under tension, and 
 the housing recess and the disk recess are axial recesses, which are aligned parallel with the direction of a joint between housing and cover disk. 
 
     
     
       2. The display instrument according to  claim 1 , wherein a ventilation channel is arranged on a floor of the housing recess and/or on a floor of the disk recess. 
     
     
       3. A display instrument comprising a housing retaining a cover disk and a connector element connecting the housing and the cover disk, wherein:
 the connector element engages in a housing recess arranged in the housing, 
 the connector element is arranged in the housing recess and a disk recess of the cover disk corresponding to the housing recess under tension, and 
 the housing has a ventilation hole connecting the housing recess to a housing surface facing away from the cover disk, and/or the cover disk has a ventilation hole connecting the disk recess to a disk surface facing away from the housing. 
 
     
     
       4. A method for connecting a cover disk to a housing during the production or repair of a display instrument, comprising the steps of:
 introducing at least a first partial area of a connector element under tension into a housing recess of the housing, 
 placing the cover disk and the housing together, and 
 introducing a second partial area of the connector element under tension into a disk recess of the cover disk corresponding to the housing recess so as to connect the housing and the cover disk together; 
 wherein the connector element is sucked into the housing recess and/or into the disk recess. 
 
     
     
       5. A method for connecting a cover disk to a housing during the production or repair of a display instrument, comprising the steps of:
 introducing at least a first partial area of a connector element under tension into a disk recess of the cover disk, 
 placing the cover disk and the housing together, and 
 introducing a second partial area of the connector element under tension into a housing recess of the housing corresponding to the disk recess so as to connect the cover disk and the housing together. 
 
     
     
       6. The method for production of a display instrument according to  claim 5 , wherein the connector element is sucked into the housing recess and/or into the disk recess. 
     
     
       7. The method according to  claim 5 , wherein the display instrument is for a motor vehicle.